Physics MCQ Questions Answers General Knowledge Set

31) In nuclear reaction which one of the following is conserved ?

a) Atomic number

b) Mass number

c) Atomic number, Mass number and energy

d) None of the above

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Option – c)

32) Which one of the following forces lead to separation of the cream from the churned milk?

a) Gravitational force

b) Cohesive force

c) Centripetal force

d) Centrifugal force

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Option – d)

33) which one of the following reactions is the main cause of the energy radiation from the sun?

a) Fusion reaction

b) Fission reaction

c) Chemical reaction

d) Diffusion reaction

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Option -a)

34) Which one of the following mechanisms used the Pascal’s law?

a) The flight take-off

b) The floating of ship

c) The hydraulic brakes

d) The landing of flight

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Option – c)

35) When the matter is cooled to very low temperature, it will from

a) Semi- conductor

b) Super-conductor

c) Insulator

d) Capacitor

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Option -b)

36) Which one of the following instruments is used by the submarine sailors to see the objects on the surface ?

a) Telescope

b) Microscope

c) Gyroscope

d) Periscope

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Option -d)

37) Who gave the first evidence of Big-bang theory ?

a) Edwin Hubble

b) Stephen Hawking

c) S Chandrasekhar

d) Albert Einstein

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Option -a)

38) Which one of the following satellites is used to reflect the radio-signals back to the earth ?

a) Natural satellites

b) Active satellites

c) Passive satellites

d) None of these

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Option – c)

39) The common soap used in washing is worked by

a) Reducing the surface tension of water

b) Increasing the surface tension of water

c) Reducing the viscosity of water

d) Increasing the viscosity of water

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Option – a)

40) if we move from equator to people , the value of g

a) Increases

b) Decreases

c) Remains same

d) First increases then decreases

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Option -a)